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Topics >
Science and
Technology
How does a battery
produce electricity?
There are two ways of producing
electric current for power. It can be produced
by machines called "dynamos" or "generators" and
also by battery cells.
A battery cell produces electricity by
changing chemical energy into electrical energy. Part of the
chemical energy is changed into different conductors, or
electrodes. The electrodes are separated by a conducting
liquid or paste, called the electrolyte. The substances in
the battery react chemically with each other to produce an
electrical current. As a result of chemical activity a
positive charge builds up at one electrode and this can flow
through a conductor such as a wire to the other (negative)
electrode.
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